Air conditioning apparatus



Oct. 21, 1941. M. KALISCHER 2,260,275

AIR CONDITIONING APPARATUS Filed Dec. 13, 1938 2 Sheets-Sheet l 1 I 7 Jill "M v WITNESSES: ENVENTOR a H MILTOM.KQLI$CHEIE. A1 BY 7% ATTORNEY Oct. 21, 1941. M. KALISCHER AIR CONDITIONING APPARATUS 2 Sheets-Sheet 2 Filed Dec.

INVENTOR M/Lrou KnL/scHER.

WITNESSES: W .F/G- 3.. U. 12

ATTORNZ) Patented-Oct. 21, 1941 UNITED j STATE s PATENT. OFFICE.

Ant CONDITIONING APPARATUS Milton Kaiisclier,

Westinghouse Electric pany, East Pittsburgh, Pa.,

Pennsylvania Springfield, Masa, assignor to & Manufacturing Goma corporation of Application December 13; 1938, Serial No. 245,497 Giaims. (ct 62-140) an object to provide an These and other objects are effected by my invention as will be apparent from the following description and claims taken in accordance.

with the accompanying drawingaiorming a part of this application, in which: Fig. 1 isa perspective view of with parts broken away;

Fig. 2 is a side elevation thereof; and

Fig. 3 is a horizbntalsectional view. I

Referring to the drawings in detail, I show a unit room cooler including a'vertical portion I0 and a horizontal projecting portion II which projects rearwardly from the upper part of the vertical portion.

The room cooler includes .a unitary frame l2 of any suitable construction for, both the vertical and projecting portions, and a cabinet l3 enclosing the same. to be mounted in the window of the room to be a room 000162,

of the evaporator, through acloth duct member 23 and a ian shroud 24 to the outlet l8, from which'it is discharged into the room. A float valve 25 and an. accumulator 26 are disposed adjacent the end of the evaporator. as shown.

The vertical portion of the illustrated ro'om' cooler'is generally similar, with the exception the character set forth.

' the bottom of the projecting portion between of the condenser, to the'room cooler shown and described in the application of R. E. Holmes, Se-

rial No. 113,557.

A condenser 21 is disposed in the projecting portion adjacent-the outer-side thereof, as shown on the drawings. The condenser may be of any suitable construction.

In .the illustrated embodiment it is of the cross-finned type, comprising tubes and blades or fins extending trans.- versely of the tubes. A-pan 28 is mounted at the vertical portion Ill and the condenser 21: A tube 28, arranged as shown in Fig. 2, conveys the condensate from the drain'pan [5 to the pan 28 to be evaporated therein.

A fan 8| is provided for effecting flow of outdoor air over the condenser to cool the same and over the pan 28 to evaporate the condensate therein. The fan ii is disposed in a fan opening formed in a partition 32 which extends inwardly from aniintermediate point of the condenser to the vertical portion 18. The fan 8i is over- The room cooler is adapted cooled, the projecting portion H being proiect- An evaporator I4 is mounted on the frame i2 in the upper part of the vertical portion and adrain pan I5 is mounted beneath the evaporator for collecting the moisture condensed from the air by the evaporator. Amenclosed motor compressor unit It is mounted on the frame l2 in the lower part of the vertical portion and is preferably enclosed in a sound-absorbing box or enclosure l1. The cabinet isformed with air inlets l8 in the sides of the vertical portion and an outlet il in the top thereof. Air filters 2i maybe disposed againsttheinlets l8.

A- fan 22 is disposed above the evaporator operates to effect flow of air inwardly through the inlets l8 and the filters 2| then upwardly between the box i'l andthe cabinet, ,overthe edge of'the drain pan is to the underside of the evaporator ll. then upwardly over the surfaces and hung on the shaft of a drive motor 38 which'issuspended from a removable inner cover plate 34 by a bracket 35. The fan eflects flow of 'air inwardly over one-half of the condenser, then over one-half ofthe pan 28 and over the motor.

83 to the fan 3|, then from the fan over the other half of the man 28 and over the other half of the condenser to outdoors.

Tubing 38, which may be bent to serpentine form shown, is placed in the pan 28. Compressed refrigerant gas which is discharged from the compressor at hightemperature is conveyed through the tubing 38 before being admitted to the condenser and supplies heat to the condensate in the pan 28 to facilitate its evaporation.

The compressor, the condenser, and the evapjorator are'connected in refrigerant fiow relation. Refrigerant is compressed by the motor compressorunit and dischargedtherefrom at high temperature. It is conveyed through con necting tubing 81 to the tubing 36 in the pan 28, where it givesup some of its -heat. mostly its superheat, to the condensate in the pan. This heat transfer serves two purposes, first, it effects some of the heat removal from the refrigerant,

and. secondly, it supplies latent heat of vapori- WhatjI claim is:*

over the same to outdoors.

tracted from the air'flowing over the evapo-i' rator. The vaporized refrigerant flows through a conduit 43, the accumulator 26, and a conduit to the motor compressor unit it. a r Y air is drawn over one portion of the condenser, its temperature is raised by ,the heat extracted therefrom/thereby increasing the moisture-carrying capacity; of the air. Thus, as the'air flows over the pan 28, it serves to evaporate the condensate contained therein. Thecontactof the air with the condensate also.

serves to cool the air, due to the fact that the 2. A self-contained room cooler adapted tobe orator and a a condenser l condensate absorbs heat from the air to effect vaporization thereof. Accordingly, the air being at reduced temperature is more effective to cool the second half of the condenser as it passes The condenser fan 3| may be located, asshown in'Flg. 2, so that if the liquid in the pan 28 rises abnormally high, the blade tips of the fan will dip into 21.-

bya damper 46 may be probetween the evaporator com- 1 When the damper .46 isin open position,'room air s maining half oft dischargedtooutdoo {from the vspirit thereof,

;that only such limitations shall be placed there- -'w'uponjasare'imposed by x {specifically set forthinthe appended claims.

oratorfto, collect den l sate'ftherein condenser.

1 'which has entered through the'inlets II and the partment' before 1 ll. This air passes into thecondenser chamber J9 on the suction side of the fan II- and is then forced along with'the outdoor air over the repan 28 and condenser 21 and The air withdrawn from the room isreplaced by outdoor air, thereby pro- 5 viding for ventilation of the'room. 1 .While I have shown but is susceptible of varications without departing iouschanges and m I and I desire, therefore.

the prior art or as are the liquid and splash it against the condenser Provision maybe made for changing the air in 1- the room. For example, as-shown in'Fig. 3,-an

opening 4! controlled vided'in the wall 41 partment, l8 and the-condenser compartment 49. i

1 my invention'in but one 1 form, itwill be, obviousto those skilled in the art 4 l'that it is not ond portion projecting horizontally I evaporate condensate therein. 1 through another portion of said filters 2| is withdrawn from theevaporator c'omit passes over the evaporator r 1. A son-contained groom cooler comprising 7 I .iframe and housingstructure, a condenser,-an

1 I I evaporator, means for'i'conveying' air over .said

' J evaporator and'delivering the same to the room to 1 ing, for conveying air inwardly from one portion -of the condenser, over said pan to evaporate condensate therein and through said opening, and then outwardly through condenser.-

. pan beneath said evapbe cooled, a drain jsecond pan, means for conveying condensate said drainpan to said second p n." means for conn including a fan-for effecting. flow oi a "stream 0 then'over said pan-to evaporate condenandthence over a second portion of condensate formed thereon, a

-. evaporation thereof; and thenceto said condenser,-

' and niea t f cooling air overone portion of said conj'veyinghot refrigerant gas discharged from'said compressor in heat transfer relation to the conin'said second p an to provide heat for inaroomhavingawindowinawall thereof, room cooler comprising a vertically extending P01131011 adapted to densate in said pan and thence to said condenser,

fan disposed inwardly' of said condenser for conveying air inwardly from one portion ofthe condenser,-

and means including a over said pan to evaporate condensate therein.

wardly through another portion of said condenser.

, 3. A self-contained room cooler adapted to be disposed in and to cool a room having a window in a wall thereof, said room cooler comprising a vertically extending portion adapted posed in said room adjacent said wall and a secwindow from the upper portion of portion, an evaporator and 'a compressor in said vertical portion, a condenser disposed in said proiecting portion adjacent the outer side thereof, a

pan disposed in said-projecting portion inwardly of said condenser, means for conveying condensate from said evaporator to said including a fan disposed. inwardly of. said con-1 pan, and 11188118 denser for effecting flow of air one portion of said condenser,

inwardly through over said pan to and outwardly pan having upturned flanges to retain condensate inwardly of the condenser an portion thereof so that the air owing between said condenser portions contacts the surface of the condensate in the pan to effect said evaporav I I I 4. A self-contained room cooler adapted to be in thereof, said room cooler comprisinga' vertically extending portion adapted -to be disposed in said room adjacent said wall and a jecting horizontally through upper portion of said vertical portion, an evaporator and a compressor in said vertical portion, a condenser disposed-in saidproiecting portion adjacent the outer side thereof, a pan disposed in said projecting portion inwardly of said condenser, means for conveying condensate. from said along both said evaporator to said pan, and means, including a I partition extending inwardly from an intermediate point of said condenser and having a fan opening therein and including a fan in said openanother portion of said cent the inner side of theunit, a condenser mounted vertically along the outer side of said horizontally-extending portion and parallel to I be disposed in said room adjacent said wall and a second portion pro- I jecting horizontally through discharged from said.

and then out-1 tobedis-.

through the said vertical condenser, said a room having a window in a wall the window from the the window, a pan disposed at substantially the level of the bottom of said condenser and extending inwardly therefrom, said pan receiving and retaining the condensate formed on said evaporator, a fan disposed directly above-said pan for efiecting flow of air inwardly through one portion of said condenser, over said pan in contact with the condensate therein and outwardly over a second portion of said condenser, the arrangement being such that the air stream flowing between said one and said second condenser portion is disposed substantially entirely above the bottom of said pan.

MILTON KALISCHER. 

